(music): The mechanism, that is the set of moving mechanical parts, of a keyboard instrument, like a piano, which transfers the motion of the key to the sound-making device.
(law) A charge or other process in a law court (also called lawsuit and actio).
(mathematics) A mapping from a pairing of mathematical objects to one of them, respecting their individual structures. The pairing is typically a Cartesian product or a tensor product. The object that is not part of the output is said to act on the other object. In any given context, action is used as an abbreviation for a more fully named notion, like group action or left group action.
The event or connected series of events, either real or imaginary, forming the subject of a play, poem, or other composition; the unfolding of the drama of events.
(art, painting and sculpture) The attitude or position of the several parts of the body as expressive of the sentiment or passion depicted.
“It's my social commitment as an actor to perform the role and to do justice to it.”
“A film clip of Lennon, in what seems to be a late 1960s interview, had its audio removed and replaced with the voice of an actor mimicking his voice.”
“Yet this individual becomes a key actor in the theater of ethnographic research and plays a pivotal role, linking the fieldworker and the community.”
“She has returned home to pursue her career in acting.”
“I conceive the Lord Chamberlain or Master of the Revels, with the King's allowance, may authorize any persons to act, or forbid and hinder them from acting in any of the King's houses or palaces.”
“Aziz tried to explain that it was all just acting, but this did nothing to calm her anger.”
actuator
Something that actuates something else, especially a usually electric device that causes a mechanical device (i.e. a mechanism) to be switched on or off, for example an electric motor that opens and closes a valve
“You have been called a social activist and writer with a message and mission.”
“He was jailed as a freedom rider, arrested as a war activist and, at the United Nations headquarters in New York, as a hunger striker against nuclear weapons.”
“Concords widespread activeness and growth experience in Asia Pacific is significant factor for the partnership venture to launch biofuels construction market in that area.”
“Might the actish feel of some occurrence itself constitute that event's activeness, or the agent's exercise of active control?”
“Now we can share and compete over our activeness, our sleep quality or the healthiness of our meals.”
“Erickson et al. proposed a visualization method of representing the activenesses of discussions by the positions of circles that correspond to participants.”
“Thus we have a kind of whole which is constituted by the internal interrelatedness of the actings of the being, in respect to their being an integral acting.”
“These actings have to be noted down in the report of the elections of all concerned electoral offices.”
“Much of this relates to actings less than four months that have been extended beyond four months.”
